/*
 * Copyright 2025 mingliqiye
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * ProjectName mingli-utils
 * ModuleName mingli-utils.main
 * CurrentFile SpringBeanUtil.java
 * LastUpdate 2025-09-09 08:37:33
 * UpdateUser MingLiPro
 */

package com.mingliqiye.utils.bean.springboot;

import lombok.Getter;
import org.jetbrains.annotations.NotNull;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * Spring Bean工具类
 * 实现ApplicationContextAware接口，并加入Component注解，让spring扫描到该bean
 * 该类用于在普通Java类中注入bean,普通Java类中用@Autowired是无法注入bean的
 * <p>
 * 需要放入扫描类中
 *
 * @author MingLiPro
 */
@Component
public class SpringBeanUtil implements ApplicationContextAware {

	/**
	 * 获取applicationContext
	 */
	@Getter
	private static ApplicationContext applicationContext;

	/**
	 * 通过bean名称获取Bean实例
	 *
	 * @param name bean名称
	 * @return bean实例对象
	 */
	public static Object getBean(String name) {
		return getApplicationContext().getBean(name);
	}

	/**
	 * 通过bean类型获取Bean实例
	 *
	 * @param clazz bean的Class类型
	 * @param <T>   泛型类型
	 * @return 指定类型的bean实例
	 */
	public static <T> T getBean(Class<T> clazz) {
		return getApplicationContext().getBean(clazz);
	}

	/**
	 * 通过bean名称和类型获取指定的Bean实例
	 *
	 * @param name  bean名称
	 * @param clazz bean的Class类型
	 * @param <T>   泛型类型
	 * @return 指定名称和类型的bean实例
	 */
	public static <T> T getBean(String name, Class<T> clazz) {
		return getApplicationContext().getBean(name, clazz);
	}

	/**
	 * 设置ApplicationContext上下文对象
	 * 当Spring容器初始化时会自动调用此方法，将ApplicationContext注入到本工具类中
	 * 通过判断避免重复赋值，确保只设置一次ApplicationContext
	 *
	 * @param applicationContext Spring应用上下文对象
	 * @throws BeansException bean异常
	 */
	@Override
	public void setApplicationContext(
		@NotNull ApplicationContext applicationContext
	) throws BeansException {
		SpringBeanUtil.applicationContext = applicationContext;
	}
}
